   <h2>所有借出的书本</h2>
   <ul>
     {% for book in borrowed_books %}
       <li>
         《{{ book.title }}》 - 借用人：{{ book.borrowed_by.username }}
       </li>
     {% empty %}
       <li>暂无借出书本。</li>
     {% endfor %}
   </ul>
   <a href="{% url 'index' %}">返回首页</a>